Shock

Shock occurs when your blood pressure falls to a very low level. As your blood pressure falls, your brain and other organs don't get enough blood or oxygen to function, and they begin to fail. Shock can arise from any of a number of causes. It is a life-threatening medical emergency and must be treated early to avoid serious complications and even death.

Shock can have several causes. Doctors classify shock according to four categories:

Loss of fluid in the bloodstream (hypovolemic shock) -- occurs after heavy bleeding from an injury or a condition such as bleeding ulcers. Hypovolemic shock can also occur if your body loses too much of fluids other than blood (such as losing water after severe diarrhea or vomiting, or losing plasma after serious burns).

Blood vessels become too dilated (distributive shock) -- If the blood vessels expand too much, they are not able to keep blood circulating to all organs. Septic shock, which occurs when bacteria invade the bloodstream, and anaphylactic shock, which is a severe allergic reaction, are examples.

Heart problems (cardiogenic shock) -- In this case, the heart doesn't pump enough blood through the body. It can be caused by a heart attack, abnormal heart rhythm, or damage to the heart from heart disease.

Who's Most At Risk?:

The following conditions and characteristics increase the risk for shock:Serious injury and traumaHeart conditions such as heart disease or heart attackSurgeryBacterial infection that has spread to the bloodBleedingLosing large volume of fluids from severe diarrhea or vomitingExcessive alcohol useSevere anemiaWeakened immune systemAllergic reaction to a drug, food, or environmental exposureDrug overdosePregnancy.

What to Expect at Your Provider's Office:

Shock is an emergency and requires immediate conventional treatment. Your health care provider will diagnose shock based on your symptoms and any information about underlying disease or recent injury. Your health care provider will check blood pressure, assess mental status (memory, orientation, and alertness), measure urine output, and order blood tests to check heart, lung, and kidney function and search for evidence of sepsis (blood infection). Imaging and other procedures -- such as x-ray, electrocardiography (ECG), echocardiography -- may be performed to check the heart.

Treatment Options:

Prevention:

If you have heart disease or another condition that makes you susceptible to shock, you should seek treatment for that condition. If you have severe allergies, avoid substances that may trigger anaphylactic shock and carry self-injectable epinephrine to treat anaphylaxis.

Treatment Plan:

The main goals of treatment are to maintain blood pressure and to make sure the person's vital organs get enough blood and oxygen. First aid for shock includes having the person lie on their back, raising their legs to help blood return to the heart, stopping any bleeding, covering them with a coat or blanket to ensure warmth, and performing cardiopulmonary resuscitation (CPR), if needed. Emergency medical staff will administer oxygen and, in the case of hypovolemic and septic shock, intravenous fluids.

Drug Therapies:

The following medications may be used to treat shock:Drugs that increase pressure in the arteries and help the heart pump more blood, such as dopamine, dobutamine, and norepinephrineMedications to either dilate or constrict blood vessels (depending on the cause of shock)Antibiotics for septic shock, to combat wide-ranging infectionThrombolytic therapy (drugs that dissolve clots as they form) may be considered in the case of heart attack or pulmonary embolism.

Complementary and Alternative Therapies:

Shock is always life threatening and requires emergency conventional medical care. Some complementary and alternative therapies, however, may be used along with conventional treatment after a person's condition stabilizes, to help prevent shock. For instance, certain nutrients may help protect against the harmful effects of shock and improve the outcome of conventional treatment.

Nutrition and Supplements:

Oxidative stress (damage to cells caused by the body's normal use of oxygen) may play a role in shock. Several studies have suggested treatment with antioxidants that help rid the body of free radicals (harmful byproducts of the oxidative process) may protect against some types of shock. However, most of these have been animal studies. It is not known whether or not these supplements will also benefit humans.

Since shock always requires emergency conventional medical treatment, it should never be treated with herbs alone. Some herbs that support the immune system may be beneficial in treating septic shock, along with conventional medications. Talk to your doctor before taking any herbs to treat or prevent shock.

No scientific studies have evaluated homeopathic remedies for the treatment of shock. The remedy aconite, however, is often used by homeopathic doctors for emergency conditions. In homeopathic remedies, aconite is highly diluted, and only a trace amount of the herb is present, so it is not toxic in a homeopathic formulation.

Prognosis/Possible Complications:

If someone suffering from shock receives immediate treatment, the prognosis is good. Immediate treatment for anaphylactic shock, for example, usually results in complete recovery. But any case of shock is life threatening, regardless of its cause, particularly in the elderly. Shock often causes organ damage (including the kidneys, brain, and liver), cardiac arrest, and respiratory failure.

Following Up:

If you are suffering from shock, you will likely be admitted to intensive care. Following treatment, your health care provider will carefully monitor your condition, including temperature, blood pressure, heart function, urine flow, and blood chemistry.

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